  /* css初始化 */
  
  * {
      /* 清除盒子边距 */
      margin: 0;
      padding: 0;
      list-style: none;
      /* 消除无序列表的圆点 */
      /* css3盒子模型 */
      box-sizing: border-box;
  }
  
  input {
      outline: none;
  }
  /* 图片初始化 */
  
  .img button {
      border: 0;
      vertical-align: middle;
  }
  
  a {
      text-decoration: none;
  }
  /* 导航栏 */
  
  .wrap {
      width: 100%;
      height: 70px;
      background-color: #fff;
      box-shadow: 0 1px 0 0 rgb(0 0 0 / 6%);
  }
  /* 导航栏 */
  
  .wrap-content {
      width: 1200px;
      margin: 0 auto;
      /* overflow: hidden; */
      vertical-align: middle;
  }
  /* 导航栏左边框架 */
  
  .wrap-content-left {
      float: left;
      margin-top: 15px;
      min-width: 350px;
      height: 40px;
  }
  
  .wrap-content-left div {
      float: left;
  }
  /* 导航栏左边文字1 */
  
  .wrap-content-left .title-1 {
      font-size: 20px;
      font-family: PingFangSC-Medium, PingFang SC;
      font-weight: 500;
      color: #333;
      line-height: 40px;
      margin-left: 10px;
  }
  /* 导航栏左边文字2 */
  
  .wrap-content-left .title-2 {
      position: relative;
      font-size: 18px;
      font-family: PingFangSC-Regular, PingFang SC;
      font-weight: 400;
      color: #999;
      margin-left: 20px;
      line-height: 40px;
  }
  /* 导航栏左边框架竖线设置 */
  
  .wrap-content-left .title-2::before {
      content: "";
      position: absolute;
      left: -10px;
      width: 1px;
      height: 14px;
      background: #d8d8d8;
      top: 15px;
  }
  /* 导航栏右边框架 */
  
  .wrap-content-right {
      float: right;
      /* overflow: hidden; */
      height: 100%;
  }
  /* 选择项 */
  
  .tab-list {
      float: left;
      display: flex;
      height: 100%;
      justify-content: center;
      align-items: center;
  }
  /* 选择项 */
  
  .sec1 {
      line-height: 70px;
      padding: 0 16px;
      margin: 0 4px;
      font-size: 16px;
      font-weight: 800;
      color: #333;
      position: relative;
      cursor: pointer;
  }
  
  .sec1::after {
      content: "";
      position: absolute;
      left: 35%;
      top: 55px;
      width: 20px;
      height: 4px;
      background-color: #FBC546;
  }
  
  .sec {
      line-height: 70px;
      padding: 0 16px;
      margin: 0 4px;
      font-size: 16px;
      color: #333;
      position: relative;
      cursor: pointer;
  }
  
  .sec a {
      color: black;
  }
  
  .sec:hover {
      font-weight: 700;
  }
  
  .sec::after {
      display: none;
      content: "";
      position: absolute;
      left: 35%;
      top: 55px;
      width: 20px;
      height: 4px;
      background-color: #FBC546;
  }
  
  .sec:visited {
      font-weight: 700;
  }
  
  .sec:hover::after {
      display: block;
  }
  /* 登陆/注册 */
  
  .login {
      float: right;
      /* width: 210px; */
      margin-left: 35px;
      height: 100%;
      line-height: 70px;
      color: #999;
      cursor: pointer;
  }
  /* 登陆 */
  
  .sign-up {
      float: left;
      margin-right: 10px;
      margin-left: 20px;
      position: relative;
      font-size: 14px;
  }
  
  .sign-up:hover {
      color: orange;
  }
  /* 注册 */
  
  .register {
      float: left;
      padding: 0 10px;
      position: relative;
      font-size: 14px;
      margin-right: 6px;
  }
  
  .register:hover {
      color: orange;
  }
  /* 登陆注册中间竖线 */
  
  .register::before {
      content: "";
      position: absolute;
      left: 0;
      top: 29px;
      width: 1px;
      height: 14px;
      background: #d8d8d8;
  }
  /* 头像图标 */
  
  .login .pic {
      float: right;
      height: 100%;
  }
  
  .login .pic img {
      width: 42px;
      height: 42px;
      vertical-align: middle;
      margin-left: 6px;
      border-radius: 50%;
  }
  
  .container-pc {
      width: 100%;
      background: #f8f9fa;
  }
  
  .wrapper {
      width: 100%;
      height: 100%;
      top: 0;
      left: 0;
      position: fixed;
      display: none;
      z-index: 9999;
      background: rgba(133, 132, 132, 0.332);
  }
  
  .logging {
      width: 480px;
      height: 580px;
      position: fixed;
      transition: 1s;
      opacity: 0;
      display: none;
      left: 50%;
      top: 50%;
      margin: auto;
      border-radius: 12px;
      border-top-left-radius: 50px;
      border-top-right-radius: 50px;
      /* background-color: rgba(239, 244, 248, 0.6); */
      background-color: #fff;
      transition: 1s;
      transform: translate(-50%, -50%);
      z-index: 9999;
  }
  
  .closebtn {
      float: right;
      margin-right: 10px;
      margin-top: 0px;
      padding-top: 0;
      font-size: 40px;
      font-weight: 300;
      z-index: 999;
  }
  
  .closediv {
      width: 450px;
      height: 50px;
  }
  
  .closebtn:hover {
      cursor: pointer;
  }
  
  .loginbtn:hover {
      cursor: pointer;
  }
  
  .left1 {
      position: relative;
      left: -10px;
      top: 15px;
      font-size: 20px;
  }
  
  .right55 {
      position: relative;
      right: -10px;
      top: 15px;
      font-size: 20px;
  }
  
  .item {
      margin-top: 0px;
      margin: auto;
      width: 360px;
      height: 60px;
      background-color: #eeeeee;
  }
  
  .item div {
      width: 177.5px;
      height: 60px;
      display: inline-block;
      color: black;
      font-size: 18px;
      text-align: center;
      line-height: 60px;
      cursor: pointer;
  }
  
  .active::after {
      content: "";
      position: relative;
      background: #fcd766;
      width: 50px;
      height: 6px;
      left: 0;
      right: 0;
      bottom: 5px;
      z-index: 99;
  }
  
  .content {
      width: 100%;
  }
  
  .content div {
      margin: 20px 30px;
      display: none;
      text-align: left;
  }
  
  .p1 {
      color: #4a4a4a;
      /* margin-top: 30px; */
      margin-bottom: 1px;
      font-size: 15px;
      font-weight: 700;
      letter-spacing: 10px;
  }
  
  .content input[type="text"],
  .content input[type="password"] {
      margin: 10px auto;
      width: 80%;
      height: 50px;
      border-radius: 3px;
      border: 2px solid #adadad;
      padding: 0 10px;
      box-sizing: border-box;
      font-size: 15px;
  }
  
  .content input:hover {
      border: 2px solid #FCD15B;
  }
  
  .content input[type="submit"] {
      margin-top: 20px;
      width: 70%;
      height: 40px;
      border-radius: 5px;
      color: black;
      border: 1px solid #adadad;
      background: #FCD15B;
      cursor: pointer;
      letter-spacing: 4px;
      margin-bottom: 20px;
      font-size: 20px;
  }
  
  .active {
      background: white;
      font-size: 40px;
      font-weight: 900;
  }
  
  .item div:hover {
      background: #f6f6f6;
  }
  
  .loginpic1 {
      width: 100%;
      height: 200px;
      /* background-color: #FFD675; */
      background: linear-gradient(#FFD675, #FED46D);
  }
  
  .title {
      position: relative;
      margin-left: 60px;
      font-size: 46px;
      font-weight: 500;
      letter-spacing: 3px;
      text-align: center;
  }
  
  .desc {
      text-align: center;
      letter-spacing: 8px;
      margin-bottom: 20px;
  }
  
  input[type=checkbox] {
      cursor: pointer;
      position: relative;
      width: 15px;
      height: 15px;
      font-size: 14px;
  }
  
  input[type=checkbox]::after {
      position: absolute;
      top: 0;
      color: white;
      width: 15px;
      height: 15px;
      display: inline-block;
      visibility: visible;
      padding-left: 0px;
      text-align: center;
      content: ' ';
      border-radius: 3px
  }
  
  input[type=checkbox]:checked::after {
      content: "✓";
      font-size: 12px;
      font-weight: bold;
      background-color: #FFD675;
  }
  
  input[type=radio] {
      cursor: pointer;
      position: relative;
      width: 15px;
      height: 15px;
      font-size: 16px;
  }
  
  input[type=radio]::after {
      position: absolute;
      top: 0;
      color: white;
      width: 15px;
      height: 15px;
      display: inline-block;
      visibility: visible;
      padding-left: 0px;
      text-align: center;
      border-radius: 50%;
      content: ' ';
      border-radius: 3px
  }
  
  input[type=radio]:checked::after {
      content: "✓";
      font-size: 12px;
      font-weight: bold;
      border-radius: 50%;
      background-color: #FFD675;
  }
  
  .loginfoot {
      width: 100%;
      height: 50px;
      line-height: 50px;
      text-align: center;
  }
  
  .loginfoot img {
      float: left;
      height: 45px;
      width: 40px;
      padding-top: 15px;
  }
  
  .loginfoot img:hover {
      cursor: pointer;
  }
  
  .loginfoot li {
      display: inline-block;
  }
  
  .zi {
      font-size: 17px;
      padding-bottom: 20px;
      margin-bottom: 20px;
  }
  
  .zi:hover {
      cursor: pointer;
  }
  
  #error1 {
      margin-top: 5px;
      color: #ea5e3c;
  }
  
  #error {
      margin-top: 25px;
      height: 20px;
      line-height: 20px;
      text-align: center;
      color: #ea5e3c;
  }
  
  #rlogo {
      display: none;
  }
  /* 下拉按钮样式 */
  
  .dropbtn {
      background-color: white;
      color: black;
      padding-bottom: 25px;
      padding-left: 15px;
      padding-right: 16px;
      font-size: 16px;
      border: none;
      cursor: pointer;
      height: 100%;
      margin-right: 0px;
  }
  /* .dropbtn::after {
    content: '';
    position: absolute;
    top: 6px;
    left: 35px;
    width: 6px;
    height: 6px;
    border-right: 3px solid #666666;
    border-bottom: 3px solid #666666;
    transform: rotate(45deg);
    transition: all .6s ease;
}

.dropbtn:hover::after {
    transform: rotate(225deg);
} */
  /* 容器 <div> - 需要定位下拉内容 */
  
  .rolelogo {
      float: right;
      width: 32px;
      height: 20px;
      margin-top: 12px;
      text-align: center;
      line-height: 20px;
      border-radius: 8px;
      font-size: 15px;
      background-color: gold;
      font-weight: 500;
      color: black;
  }
  /* 容器 <div> - 需要定位下拉内容 */
  
  .dropdown {
      position: relative;
      /* display: inline-block; */
      z-index: 1;
      display: none;
  }
  
  .dropdown-icon {
      position: absolute;
      top: 8px;
      right: 1px;
      width: 0px;
      height: 0px;
      border-left: 5px solid transparent;
      border-top: 6px solid #666;
      border-right: 5px solid transparent;
      transition: all .6s ease;
  }
  
  .dropdown:hover .dropdown-icon {
      transform: rotate(180deg);
  }
  /* 下拉内容 (默认隐藏) */
  
  .dropdown-content {
      display: none;
      position: absolute;
      background-color: #f9f9f9;
      min-width: 110px;
      box-shadow: 0px 2px 2px 0px rgba(0, 0, 0, 0.2);
      font-size: 12px;
      text-align: center;
      z-index: 999;
  }
  /* 下拉菜单的链接 */
  
  .dropdown-content a {
      color: black;
      padding: 1px 6px;
      text-decoration: none;
      display: block;
      height: 45px;
      line-height: 45px;
      z-index: 999;
  }
  /* 鼠标移上去后修改下拉菜单链接颜色 */
  
  .dropdown-content a:hover {
      background-color: #f1f1f1;
  }
  /* 在鼠标移上去后显示下拉菜单 */
  
  .dropdown:hover .dropdown-content {
      display: block;
  }
  /* 当下拉内容显示后修改下拉按钮的背景颜色 */
  
  .dropdown:hover .dropbtn {
      background-color: white;
  }
  
  .footer {
      margin-top: 20px;
      width: 100%;
      background: #2d2d3a;
  }
  
  .footer-content {
      position: relative;
      width: 1200px;
      height: 190px;
      margin: 0 auto;
  }
  
  .words-left {
      position: absolute;
      top: 43px;
      left: 0;
  }
  
  .words-left-one {
      position: relative;
      font-size: 20px;
      color: #fff;
  }
  
  .words-left-one::after {
      content: '';
      position: absolute;
      top: 40px;
      left: 1px;
      width: 13px;
      height: 3px;
      background: #fbc546;
  }
  
  .words-left-two {
      position: relative;
      font-size: 16px;
      color: hsla(0, 0%, 100%, .8);
      margin-top: 35px;
  }
  
  .words-left-two::after {
      content: "";
      position: absolute;
      left: 416px;
      top: -62px;
      width: 1px;
      height: 96px;
      background: hsla(0, 0%, 100%, .1);
  }
  
  .words-right {
      position: absolute;
      top: 43px;
      right: 0px;
  }
  
  .words-right-one {
      float: left;
      margin-right: 100px;
  }
  
  .words-right-two {
      float: left;
      margin-right: 100px;
  }
  
  .words-right-pic {
      float: left;
      margin-right: 12px;
  }
  
  .words-right-pic img {
      height: 96px;
      width: 96px;
      vertical-align: middle;
  }
  
  .words-right-title {
      float: left;
      padding-top: 25px;
  }
  
  .words-right-title-one {
      font-size: 16px;
      color: #fff;
      font-weight: 700;
  }
  
  .words-right-title-two {
      font-size: 14px;
      color: hsla(0, 0%, 100%, .6);
      margin-top: 8px;
  }
  
  .footer-right {
      width: 100%;
      height: 40px;
      font-size: 14px;
      color: hsla(0, 0%, 100%, .3);
      line-height: 40px;
      text-align: center;
      background: #24242f;
  }
  
  .footer-right a {
      color: hsla(0, 0%, 100%, .3);
  }
  
  .container-pc {
      /* min-height: 1060px; */
      /* height: fit-content; */
      display: flexbox;
      background: #f8f9fa;
      /* content: "viewport-units-buggyfill; min-height: 500px"; */
  }
  
  .learn-wrap {
      width: 85%;
      margin: 0 auto;
      display: flex;
      padding-top: 28px;
      padding-bottom: 20px;
      margin-bottom: 0;
  }
  
  .hasPay-content {
      background: #fff;
      min-height: 1px;
  }
  
  .left {
      float: left;
      width: 70%;
  }
  
  .hasPay-content .no-data {
      padding-top: 22%;
      text-align: center;
      box-sizing: border-box;
      min-height: 800px;
      width: 100%;
  }
  
  .course-ul-pc {
      box-sizing: border-box;
      width: 100%;
      height: fit-content;
      background-color: #fff;
      padding: 0 35px;
  }
  
  .no-data-icon {
      width: 220px;
      height: 220px;
  }
  
  img {
      border: 0;
      vertical-align: top;
      display: inline-block;
  }
  
  .hasPay-content .no-data-title {
      font-size: 20px;
      color: #333;
      font-weight: 500;
  }
  
  .no-data-tips {
      font-size: 16px;
      color: #999;
      padding: 10px 0 30px;
  }
  
  .hasPay-content .btn-center {
      margin: 10px auto;
  }
  
  .course-ul-pc .btn-green {
      background: #fcd766;
      border: none;
  }
  
  .course-ul-pc .btn {
      width: 94px;
      height: 38px;
      text-align: center;
      line-height: 34px;
      cursor: pointer;
      border-radius: 3px;
      font-size: 14px;
      box-sizing: initial;
      color: #333;
  }
  
  .recommend-content-pc {
      float: left;
      margin-left: 20px;
      width: 330px;
  }
  
  .recommend-content-pc .section-2 {
      padding: 0 0 40px;
      position: sticky;
      top: 30px;
      /* position: fixed; */
  }
  
  .recommend-content-pc .section-2 .stickybox {
      padding: 0 0 40px;
      z-index: 999;
  }
  
  .recommend-content-pc .section-2 .title2 {
      font-size: 20px;
      color: rgb(245, 189, 7);
      margin-bottom: 16px;
      margin-top: 0px;
      letter-spacing: 3px;
      background-color: #fff;
  }
  
  .recommend-content-pc .section-2 .article-content {
      font-size: 14px;
      margin-bottom: 48px;
      background-color: #fff;
      padding-right: 20px;
      padding-left: 0;
  }
  
  ol,
  ul {
      margin: 0;
      padding: 0;
      list-style: none;
  }
  
  .recommend-content-pc .section-2 .article-content-item {
      line-height: 20px;
      color: #666;
      position: relative;
  }
  
  .text-overflow {
      word-wrap: normal;
      text-overflow: ellipsis;
      white-space: nowrap;
      overflow: hidden;
  }
  
  .recommend-content-pc .section-2 .article-content-item-index {
      color: rgb(43, 40, 40);
      background-color: rgb(250, 213, 90);
      position: absolute;
      left: 19px;
      top: 18px;
      line-height: 20px;
  }
  
  .recommend-content-pc .section-2 .article-content-item-name {
      color: #666;
      margin-left: 54px;
      display: block;
      border-bottom: 1px solid #ededed;
      padding: 18px 0;
  }
  
  .single-line {
      overflow: hidden;
      white-space: nowrap;
      text-overflow: ellipsis;
  }
  
  a {
      outline: 0 none;
      color: black;
  }
  /* a:hover {
    color: #fbc546;
} */
  
  .recommend-content-pc .section-2 .article-content {
      font-size: 14px;
      margin-bottom: 48px;
      background-color: #fff;
      padding-right: 20px;
  }
  
  .recommend-content-pc .section-2 ul {
      display: block;
      list-style-type: disc;
      margin-block-start: 1em;
      margin-block-end: 1em;
      margin-inline-start: 0px;
      margin-inline-end: 0px;
      padding-inline-start: 40px;
  }
  
  .recommend-content-pc .section-2 a:hover {
      color: #fbc546;
  }
  
  .recommend-content-pc .section-2 .social-list {
      margin-top: 20px;
      text-align: center;
      padding: 28px 0;
      background-color: #fff;
  }
  
  .recommend-content-pc .section-2 .social-list .social-item {
      display: inline-block;
      position: relative;
      width: 80px;
      height: 62px;
  }
  
  .recommend-content-pc .section-2 .social-list .qr-wrapper-img {
      width: 138px;
      height: 138px;
  }
  
  .recommend-content-pc .section-2 .social-list .social-item-img {
      width: 32px;
      height: 32px;
  }
  
  .recommend-content-pc .section-2 .social-list .social-item .social-name {
      color: #999;
      margin-top: 4px;
      font-size: 14px;
  }
  
  .recommend-content-pc .section-2 .social-list .social-item .social-name:hover {
      color: rgb(7, 243, 7);
  }
  
  .recommend-content-pc .section-2 .social-list .qr-wrapper {
      position: absolute;
      width: 120px;
      height: 120px;
      /* display: block; */
      z-index: 10;
      background: #fff;
      border: 1px solid #e3ebe9;
      box-shadow: 0 2px 3px 0 rgba(0, 0, 0, .08);
      border-radius: 3px;
      box-sizing: border-box;
      left: -30px;
      top: -150px;
  }
  
  .social-item:hover .qr-wrapper {
      display: block;
  }
  
  .hover-pointer {
      cursor: pointer;
  }
  
  .common-course-title {
      padding-left: 30px;
      padding-right: 30px;
      padding-top: 40px;
      font-size: 24px;
      padding-bottom: 8px;
      position: relative;
  }
  
  .hasPay-content .course-title-icon {
      font-size: 28px;
      color: #333;
      display: inline-block;
      vertical-align: text-bottom;
  }
  
  .kw-icon-course:before {
      content: "🎫";
  }
  /* 已购买课程 */
  
  .course-ul-pc1 {
      position: relative;
      width: 790px;
      box-sizing: border-box;
      width: 100%;
      background-color: #fff;
      padding: 0 30px;
  }
  
  .course-ul-pc1 .course-li:last-child {
      border-bottom: 0;
  }
  
  .hasPay-content .pay-padding {
      padding: 30px 0;
  }
  
  .course-ul-pc1 .course-li {
      padding: 30px 10px 40px;
      border-bottom: 1px solid #ededed;
      position: relative;
  }
  
  .course-ul-pc1 .course-li:hover {
      background-color: #ebe7e7;
  }
  
  .course-ul-pc1 .course-li:hover .btn1 {
      display: block;
  }
  
  .hasPay-content .teacher-portrait {
      width: 99px;
      height: 129px;
      border-radius: 4px;
  }
  
  .course-ul-pc1 .teacher-portrait {
      width: 121px;
      height: 159px;
      border-radius: 4px;
      float: left;
  }
  
  .hover-pointer {
      cursor: pointer;
  }
  
  .course-ul-pc1 .teacher-portrait:hover {
      transform: scale(1.1);
  }
  
  .hasPay-content .hasPay-btn {
      top: 45px;
  }
  
  .course-ul-pc1 .btn-offset {
      position: absolute;
      right: 0;
  }
  
  .course-ul-pc1 .btn-green {
      background: #fcd766;
      border: none;
  }
  
  .course-ul-pc1 .btn {
      width: 94px;
      height: 34px;
      text-align: center;
      line-height: 34px;
      cursor: pointer;
      border-radius: 3px;
      font-size: 14px;
      box-sizing: initial;
      color: #333;
  }
  
  .hasPay-content .hasPay-btn1 {
      top: 95px;
  }
  
  .course-ul-pc1 .btn-offset1 {
      position: absolute;
      right: 0;
  }
  
  .course-ul-pc1 .btn-green1 {
      background: #f13b34;
      border: none;
  }
  
  .course-ul-pc1 .btn1 {
      width: 94px;
      height: 34px;
      text-align: center;
      line-height: 34px;
      cursor: pointer;
      border-radius: 3px;
      font-size: 14px;
      box-sizing: initial;
      color: rgb(253, 250, 250);
      display: none;
  }
  
  .hasPay-content .course-tips {
      width: 100%;
      font-size: 14px;
      color: #333;
  }
  
  .text-overflow {
      word-wrap: normal;
      text-overflow: ellipsis;
      white-space: nowrap;
      overflow: hidden;
  }
  
  .hasPay-content .course-date {
      font-size: 14px;
      color: #999;
      padding: 6px 0 17px;
      height: 45px;
  }
  
  .hasPay-content .course-progress .progress-title {
      font-size: 14px;
      margin-right: 20px;
      color: #666;
      max-height: 40px;
      overflow: hidden;
      text-overflow: ellipsis;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
  }
  
  .hasPay-content .course-progress {
      display: -webkit-box;
      display: -webkit-flex;
      display: flex;
      -webkit-box-align: center;
      -webkit-align-items: center;
      align-items: center;
      font-size: 14px;
      padding-top: 16px;
      width: 85%;
  }
  
  .hasPay-content .p-title {
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
      width: 100%;
      font-size: 20px;
      font-family: PingFangSC-Medium, PingFang SC;
  }
  
  .hasPay-content .course-li .pay-course-main {
      line-height: 1.4;
      margin-left: 120px;
      position: relative;
      height: 130px;
  }
  
  .hasPay-content .teacher-portrait {
      float: left;
      width: 99px;
      height: 129px;
      border-radius: 4px;
  }
  
  .hasPay-content .learn-record-icon {
      width: 18px;
      height: 18px;
  }
  
  .aftertips {
      position: fixed;
      width: 180px;
      background-color: #f5eda6;
      top: -40px;
      left: 0;
      right: 0;
      bottom: 0;
      margin: 0 auto;
      height: 40px;
      line-height: 40px;
      font-size: 20px;
      font-weight: 600;
      padding-left: 20px;
      text-align: center;
      border-radius: 10px;
      transition: top .8s, opacity .8s;
      opacity: .8;
      z-index: 12;
  }
  
  .aftertips>div {
      display: inline-block;
      line-height: 30px;
      height: 30px;
      border-radius: 5px;
      background-color: #fcea47;
      padding-left: 15px;
      padding-right: 60px;
  }
  
  .centerarea {
      width: 90%;
      height: 200px;
      border-radius: 15px;
      margin: 20px auto;
      display: flex;
      justify-content: center;
      align-items: center;
      background: url(./img/areacenter.jfif);
      box-shadow: 0px 15px 15px 0px rgba(0, 0, 0, 0.2);
  }
  
  .centertitle {
      width: 50%;
      height: 65px;
      line-height: 60px;
      text-align: center;
      border-radius: 10px;
      border: 3px solid #fcea47;
      background-color: #fff;
      opacity: .7;
      font-weight: 600;
      font-size: 50px;
      color: orange;
      letter-spacing: 15px;
  }
  
  .contentlist {
      width: 100%;
      min-height: 500px;
      border-radius: 15px;
      background-color: rgb(250, 244, 244);
      margin: auto;
      display: none;
  }
  
  .questiontitle {
      position: relative;
      top: 10px;
      width: 50%;
      background-color: #fff;
      height: 100px;
      color: goldenrod;
      border-radius: 20px;
      font-size: 45px;
      font-weight: 600;
      line-height: 100px;
      margin: 30px auto;
      text-align: center;
      letter-spacing: 10px;
      box-shadow: 0px 10px 10px 0px rgba(0, 0, 0, 0.2);
  }
  
  .avatar {
      margin-top: 5px;
      margin-left: 45px;
      width: 70px;
      height: 70px;
      border-radius: 50%;
  }
  
  .questionlist {
      width: 90%;
      margin: 28px auto;
      padding-top: 5px;
      background-color: #fff;
  }
  
  .container {
      display: flex;
      justify-content: space-between;
      width: 90%;
      min-height: 200px;
      margin: auto;
      border-radius: 6px;
      box-shadow: 0px 5px 5px 0px rgba(0, 0, 0, 0.2);
      transition: all 0.3s ease;
      margin-top: 30px;
      border: 3px solid rgb(245, 219, 76);
      cursor: pointer;
  }
  
  .container:hover {
      transform: translateY(-6px);
      box-shadow: 0px 5px 5px 0px rgba(0, 0, 0, 0.2);
  }
  
  .imgbox {
      border: 1px solid grey;
      width: 170px;
      height: 170px;
      margin-top: 10px;
      margin-left: 10px;
      box-shadow: 0px 5px 5px 0px rgba(0, 0, 0, 0.2);
  }
  
  .user_name {
      width: 100%;
      color: grey;
      font-size: 18px;
      font-weight: 600;
      text-align: center;
      padding-left: 2px;
  }
  
  .idbox {
      margin-top: 15px;
      width: 100%;
      height: 20px;
      text-align: center;
      font-size: 18px;
      font-weight: 500;
  }
  
  .container .question {
      /* display: flex;
      flex-direction: column; */
      width: 50%;
      /* height: 120px; */
      margin-left: 10px;
      margin-top: 20px;
      margin-right: 10px;
      font-size: 22px;
      font-weight: 650;
  }
  
  .c1 {
      width: 100%;
      font-size: 22px;
      font-weight: 650;
      overflow: hidden;
      text-overflow: ellipsis;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      display: -moz-box;
      -moz-line-clamp: 1;
      -moz-box-orient: vertical;
      word-wrap: break-word;
      word-break: break-all;
      white-space: normal;
  }
  
  .time {
      position: relative;
      top: 3px;
      height: 50px;
      line-height: 50px;
      padding-top: 10px;
      color: orange;
      font-size: 18px;
  }
  
  .pnum {
      width: 20%;
      height: 100%;
      padding-top: 100px;
      color: goldenrod;
      font-weight: 600;
  }
  
  #return_top {
      position: fixed;
      width: 40px;
      height: 58px;
      background: url(https://s21.lgstatic.com/growth/activity/20201231/1609394319550.png) no-repeat;
      background-size: 100% 100%;
      right: 70px;
      bottom: 96px;
      z-index: 100;
      display: none;
      cursor: pointer;
  }
  
  #return_top:hover {
      background: url(https://s21.lgstatic.com/growth/activity/20201231/1609394520801.png) no-repeat;
      background-size: 100% 100%;
  }
  
  .postquestion {
      margin: auto;
      width: 80%;
  }
  
  .areatip {
      width: 100%;
      height: 0.01px;
      visibility: hidden;
      transition: height 1s ease-out;
  }
  
  .postaction {
      width: 180px;
      margin-top: 5px;
      height: 40px;
      line-height: 40px;
      text-align: center;
      font-size: 22px;
      font-weight: 600;
      border-radius: 15px;
      border: 2px solid rgb(230, 248, 69);
      background-color: rgb(247, 196, 67);
      box-shadow: 0px 5px 5px 0px rgba(0, 0, 0, 0.2);
      cursor: pointer;
  }
  
  .edittip {
      margin: 15px auto;
      width: 70%;
      height: 150px;
      font-family: 'microsoft yahei';
      font-size: 18px;
      overflow: hidden;
      outline: none;
      resize: none;
      border: 2px solid rgb(238, 202, 43);
      box-shadow: 0px 5px 5px 0px rgba(0, 0, 0, 0.2);
      /*用来不让文本框大小变化的*/
      border-radius: 6px;
  }
  
  .edittip1 {
      width: 70%;
      margin-left: 90px;
      height: 150px;
      font-family: 'microsoft yahei';
      font-size: 18px;
      overflow: hidden;
      outline: none;
      resize: none;
      border: 2px solid rgb(238, 202, 43);
      box-shadow: 0px 5px 5px 0px rgba(0, 0, 0, 0.2);
      /*用来不让文本框大小变化的*/
      border-radius: 6px;
  }
  
  #backbtn {
      width: 100px;
      margin-top: 5px;
      height: 40px;
      line-height: 40px;
      margin-left: 10px;
      text-align: center;
      font-size: 22px;
      font-weight: 600;
      border-radius: 15px;
      border: 2px solid rgb(230, 248, 69);
      background-color: rgb(245, 74, 22);
      box-shadow: 0px 5px 5px 0px rgba(0, 0, 0, 0.2);
      cursor: pointer;
  }
  
  .btnlist {
      display: flex;
  }
  
  .detailquestion {
      width: 85%;
      margin: 10px auto;
      min-height: 100px;
      box-shadow: 0px 5px 5px 0px rgba(0, 0, 0, 0.2);
      border-radius: 10px;
      padding-bottom: 5px;
  }
  
  .contentlist {
      width: 100%;
      min-height: 500px;
      border-radius: 15px;
      background-color: rgb(250, 244, 244);
      margin: auto;
      display: block;
  }
  
  .questiontitle {
      position: relative;
      top: 10px;
      width: 50%;
      background-color: #fff;
      height: 100px;
      color: goldenrod;
      border-radius: 20px;
      font-size: 45px;
      font-weight: 600;
      line-height: 100px;
      margin: 30px auto;
      text-align: center;
      letter-spacing: 10px;
      box-shadow: 0px 10px 10px 0px rgba(0, 0, 0, 0.2);
  }
  
  .avatar {
      margin-top: 5px;
      margin-left: 45px;
      width: 70px;
      height: 70px;
      border-radius: 50%;
  }
  
  .answerarea {
      width: 90%;
      margin: 20px auto;
      padding-bottom: 5px;
      background-color: #fff;
      border: 3px solid #f8fc1c;
      display: none;
  }
  
  .container1 {
      display: flex;
      justify-content: space-between;
      width: 90%;
      height: 240px;
      margin: auto;
      border-radius: 6px;
      box-shadow: 0px 5px 5px 0px rgba(0, 0, 0, 0.2);
      transition: all 0.3s ease;
      margin-top: 30px;
      border: 3px solid rgb(245, 219, 76);
      cursor: pointer;
  }
  
  .reply {
      width: 90%;
      margin: auto;
      /* display: none; */
  }
  
  .title1 {
      width: 90%;
      margin: 10px auto;
      font-size: 26px;
      font-weight: 600;
      text-align: center;
      height: 80px;
      line-height: 30px;
  }
  
  .replymsg {
      margin: 10px auto;
      width: 95%;
      height: 150px;
      padding: 10px;
      display: flex;
      justify-content: space-between;
      background-color: rgb(248, 244, 244);
      border: 2px solid rgb(200, 201, 196);
      box-shadow: 0px 5px 5px 0px rgba(0, 0, 0, 0.2);
  }
  
  .replyerimg {
      width: 70px;
      height: 70px;
      border-radius: 50%;
      border: 1px solid blue;
      margin-left: 30px;
  }
  
  .replyname {
      font-size: 16px;
      margin-left: 10px;
      text-align: center;
      font-weight: 700;
      color: grey;
  }
  
  .rightcontent {
      width: 50%;
      margin-right: 100px;
      font-size: 18px;
      font-weight: 600;
      color: #6b6a69;
  }
  
  .leftcontent {
      width: 120px;
      height: 100%;
      padding-top: 5px;
      border: 1px solid grey;
  }
  
  .replytime {
      color: orange;
      margin-top: 10px;
  }
  
  .postreply {
      width: 110px;
      margin-top: 5px;
      height: 40px;
      line-height: 40px;
      text-align: center;
      font-size: 22px;
      font-weight: 600;
      border-radius: 15px;
      border: 2px solid rgb(230, 248, 69);
      background-color: rgb(247, 196, 67);
      box-shadow: 0px 5px 5px 0px rgba(0, 0, 0, 0.2);
      cursor: pointer;
  }
  
  .cancelpost {
      width: 70px;
      margin-top: 5px;
      height: 40px;
      line-height: 40px;
      margin-left: 10px;
      text-align: center;
      font-size: 22px;
      font-weight: 600;
      border-radius: 15px;
      border: 2px solid rgb(230, 248, 69);
      background-color: rgb(245, 74, 22);
      box-shadow: 0px 5px 5px 0px rgba(0, 0, 0, 0.2);
      cursor: pointer;
  }
  
  .btnlist1 {
      margin: auto;
      width: 40%;
      display: flex;
      justify-content: space-between;
  }
  
  .return {
      width: 70px;
      margin-top: 5px;
      height: 40px;
      line-height: 40px;
      margin-left: 10px;
      text-align: center;
      font-size: 18px;
      font-weight: 600;
      border-radius: 10px;
      border: 2px solid rgb(230, 248, 69);
      background-color: rgb(245, 74, 22);
      box-shadow: 0px 5px 5px 0px rgba(0, 0, 0, 0.2);
      cursor: pointer;
  }
  
  .search {
      position: relative;
      float: left;
      height: 41px;
      margin: 15px 0px;
      padding: 6px;
      background-color: #f8f9faea;
      border-radius: 40px;
      border: 2px solid #fdbd1c;
  }
  
  .search .search-input {
      float: left;
      width: 200px;
      height: 30px;
      line-height: 30px;
      border: none;
      outline: none;
      color: #333;
      font-size: 16px;
      border-radius: 6px 15px 15px 6px;
      transition: all .3s;
      background-color: #f8f9faea;
      padding-left: 12px;
  }
  
  .search .search-input::-webkit-input-placeholder {
      color: rgb(85, 84, 84);
  }
  
  .search .to_search {
      float: right;
      width: 30px;
      height: 30px;
      border-radius: 50%;
      background: url(./img/search.png) no-repeat;
      background-size: cover;
      cursor: pointer;
  }
  
  .search .to_search:hover {
      background: url(./img/search_hover.png) no-repeat;
      background-size: cover;
  }
  
  .search .search-content {
      display: none;
      position: absolute;
      height: 320px;
      top: 45px;
      left: -40px;
      width: 320px;
      z-index: 2;
      overflow: auto;
  }
  
  .search .search-content li {
      width: 100%;
      height: 52px;
      background-color: #fff;
      cursor: pointer;
      border: 2px solid #fdbd1c;
      border-radius: 6px;
      box-shadow: 0px 2px 2px 0px rgba(0, 0, 0, 0.2);
  }
  
  .search .search-content li:hover {
      background-color: #f1ebeb;
      font-weight: 700;
  }
  
  .search .search-content li img {
      margin-left: 0.5px;
      width: 37px;
      height: 49px;
  }
  
  .search .search-content li .course-info {
      display: inline-block;
      width: 250px;
      height: 30px;
      vertical-align: top;
      padding-left: 20px;
  }
  
  .search .search-content li .course-info .course-title {
      font-weight: 400;
      color: #333;
      font-size: 16px;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
  }
  
  .search .search-content li .course-info .teacher-info {
      margin-top: 2px;
      font-size: 14px;
      color: #6b6464;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
  }
  
  .highlight {
      color: #ffb600 !important;
      font-weight: 600;
  }
  
  .search-content-scroll::-webkit-scrollbar {
      width: 6px;
  }
  
  .search-content-scroll::-webkit-scrollbar-track {
      color: #fbfbfb
  }
  
  .search-content-scroll::-webkit-scrollbar-thumb {
      background-color: rgb(221, 219, 219);
      border-radius: 10px;
      box-shadow: inset 2px 2px 5px 0 rgba(#fff, 0.5);
  }